Question 427Electricity & Electronics - QMED

The correct answer is A) Low heat (series) position would result in no heat at all. Medium heat (single) position would result in no heat at all. High heat (parallel) position would result in medium heat. This is correct because if the upper heating element in circuit 'B' is burned out and open circuited, it would break the series connection in the low heat position, resulting in no heat at all. Similarly, the single upper element would be open circuited in the medium heat position, again resulting in no heat. However, in the high heat (parallel) position, the lower heating element would still be functional, resulting in medium heat output. The other options are incorrect because they do not accurately describe the behavior of the circuit when the upper heating element is open circuited.